swbemobject-derivation-.md

description	ms.assetid	ms.tgt_platform	title	ms.topic	ms.date	topic_type	api_name	api_type	api_location
The Derivation\_ property of the SWbemObject object contains an array of strings that describe the class derivation hierarchy for the instance being referenced.	8a4daab0-7d10-4a37-aacd-1f3f499b859a	multiple	SWbemObject.Derivation_ property (Wbemdisp.h)	reference	05/31/2018	APIRef kbSyntax	SWbemObject.Derivation_ ISWbemObject.Derivation_ ISWbemObject.get_Derivation_	COM	Wbemdisp.dll

SWbemObject.Derivation_ property

The Derivation_ property of the SWbemObject object contains an array of strings that describe the class derivation hierarchy for the instance being referenced. The first element in the array defines the parent class and the last element defines the dynasty class. This property is read-only.

For an explanation of this syntax, see Document Conventions for the Scripting API.

This property is read-only.

Syntax

SWbemObject.Derivation_ As String

Property value

Examples

The following VBScript sample describes how to retrieve the class hierarchy for win32_logicaldisk.

on Error resume next

Set c = GetObject("winmgmts://./root/cimv2:win32_logicaldisk")
d = c.Derivation_

for x = LBound(d) to UBound(d)
 WScript.Echo d(x)
Next

if err <> 0 then
 WScript.Echo Err.Description
end if

he following Perl sample describes how to retrieve the class hierarchy for win32_logicaldisk.

use strict;
use Win32::OLE;

my ($C, $D, @collection);

eval {$C = Win32::OLE->GetObject("winmgmts:{impersonationLevel=impersonate}!\\\\.\\root\\cimv2")->
  InstancesOf ("win32_logicaldisk") };
unless ($@) 
{
 @collection = in $C;
 eval {$D = $collection[0]->Derivation_();};
 print "\n";
 unless ($@) 
 {
  print map{"$_\n"} @{$D};
 }
 else
 {
  print STDERR Win32::OLE->LastError, "\n";
 }
}
else
{
 print STDERR Win32::OLE->LastError, "\n";
}

Requirements

Requirement	Value
Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008
Header	Wbemdisp.h
Type library	Wbemdisp.tlb
DLL	Wbemdisp.dll
CLSID	CLSID_SWbemObject
IID	IID_ISWbemObject